Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/237793
Kind Code:
A1
Abstract:
The present utility model provides a sound production device, comprising: a housing; a sound production unit, which is fixed on the housing; a boss; and an air-permeable isolation member, which is fixed on the boss. The sound production unit comprises: a cone frame, which fixed on the housing; a vibration system, which is respectively supported and fixed on the cone frame; and a magnetic circuit system for driving the vibration system to vibrate and produce sound, wherein the vibration system comprises a vibrating diaphragm fixed on the cone frame. The boss is formed by means of the housing extending in the direction of the cone frame; a rear sound cavity is jointly defined by the housing, the boss and the sound production unit; and the sound production unit is provided with a leakage part in communication with the rear sound cavity, a leakage hole is provided in the housing, and the rear sound cavity is in communication with the outside by means of the leakage hole. The boss is formed by means of the housing extending into the rear sound cavity; the air-permeable isolation member is contained in the rear sound cavity; a powder filling space is jointly defined by the air-permeable isolation member, the housing and the boss; and the powder filling space is filled with sound absorption particles. Compared with the relevant art, the sound production device of the present utility model has a simple structure and an excellent acoustic performance, and the user experience thereof is good.
Inventors:
CAO CHENGMING (CN)
WU SHUWEN (CN)
WU SHUWEN (CN)
Application Number:
PCT/CN2020/094707
Publication Date:
December 02, 2021
Filing Date:
June 05, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R1/20; H04R9/02; H04R9/04; H04R9/06
Foreign References:
| CN207124746U | 2018-03-20 | |||
| CN108307279A | 2018-07-20 | |||
| CN206575596U | 2017-10-20 | |||
| CN108235198A | 2018-06-29 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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